#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <map>
 
int main() {
    unsigned n, x, size, mode=0;
 
    freopen("mode.in", "rt", stdin);
    scanf("%d\n", &n);
 
    std::map<int,int> counts;
    while (n--) {
        scanf("%d\n", &x);
        if (( size = ++counts[x]) )> mode) mode = size;
    }
    printf("%d\n", mode);
 
    return 0;
}